Triple-material stress-strain resistivity gage

Patent · Tue May 19 00:00:00 EDT 1987

OSTI ID:6747311

Stout, R B

A triple material piezoresistive gage provides multi-component elastic stress or strain measurements. Thin foils of three piezoresistive materials, e.g., ytterbium, manganin, and constantan, are configured in a nested serpentine rectilinear grind or other grind arrangement and embedded in a medium, preferably normal to the direction of shock wave propagation. The output of the gage is a resistivity change history for each material of gage. Each resistivity change is independent of the others so that three diagonal components of the elastic stress or strain tensor can be calculated form the resistivity measurements. 4 figs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• Assignee: LLNL; ERA-14-001476; EDB-88-185940
• Patent Number(s): PATENTS-US-A6051560
• OSTI ID: 6747311
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420800* -- Engineering-- Electronic Circuits & Devices-- (-1989)
440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
DESIGN
ELECTRICITY
ELECTRONIC EQUIPMENT
EQUATIONS
EQUIPMENT
INVENTIONS
LEVELS
MEASURING INSTRUMENTS
PIEZOELECTRICITY
SHOCK WAVES
STRAIN GAGES
STRESSES
UNDERGROUND